# 极简Coca词汇 vs wordDNA：词根词缀字典

The clearest difference is price: wordDNA：词根词缀字典 at Free against 极简Coca词汇's $0.99. wordDNA：词根词缀字典 also leads on update cadence (every 6 days vs every 6 weeks) and ratings volume (4 vs 1). 极简Coca词汇's advantage is in-app purchases (none vs 3) and ads (none vs shown). On rating, device support and iOS requirement there is nothing between them.

wordDNA：词根词缀字典 is free to download; 极简Coca词汇 costs $0.99 up front. wordDNA：词根词缀字典 sells 3 in-app purchases, starting at $2.99 per month. 极简Coca词汇 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for 极简Coca词汇 against 5.0 for wordDNA：词根词缀字典. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

极简Coca词汇 ships an update every 6 weeks, wordDNA：词根词缀字典 every 6 days. The most recent releases landed on October 18, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 极简Coca词汇 | wordDNA：词根词缀字典 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/coca/id6767145778/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/worddna/id6769062051/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 6 days** |
| Monetization | Paid | **Freemium** |
| Size | 55 MB | 264 MB |
| Requires iOS | **17.0** | 17.5 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [书维 许](https://appshunter.io/developer/1896394554) | [峰 潘](https://appshunter.io/developer/1823196275) |

## What reviewers say

### 极简Coca词汇

[App page](https://appshunter.io/ios/app/coca/id6767145778)

This app helps you memorize English vocabulary using the scientifically proven Ebbinghaus forgetting curve and the COCA high-frequency word list. It offers a focused, ad-free learning experience with intelligent review scheduling to ensure long-term retention.

**Highlights:** COCA high-frequency words, Ebbinghaus memory curve, Smart review system, Minimalist learning experience, Daily lightweight study, Ad-free

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### wordDNA：词根词缀字典

[App page](https://appshunter.io/ios/app/worddna/id6769062051)

This app helps users understand English vocabulary by breaking down words into their roots, prefixes, and suffixes. It provides bilingual explanations, pronunciation, and usage examples, with offline access and basic learning tools included for free. Advanced features and content are available through an optional subscription.

**Highlights:** Bilingual word explanations, Etymology, roots, prefixes, suffixes, Pronunciation and usage examples, Offline dictionary lookup, Favorites and saved words, Basic quiz and review tools

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenEtymology Plus Monthly | $2.99 | per month |
| OpenEtymology Plus Yearly | $17.99 | per year |
| OpenEtymology Plus Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is 极简Coca词汇 free?

极简Coca词汇 costs $0.99, with no in-app purchases.

### Is wordDNA：词根词缀字典 free?

wordDNA：词根词缀字典 is free to download, with in-app purchases available.

### Which has better reviews, 极简Coca词汇 or wordDNA：词根词缀字典?

极简Coca词汇 and wordDNA：词根词缀字典 are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.

### Do 极简Coca词汇 or wordDNA：词根词缀字典 have ads?

wordDNA：词根词缀字典 shows ads; 极简Coca词汇 does not.

### Which is updated more often, 极简Coca词汇 or wordDNA：词根词缀字典?

极简Coca词汇 ships an update every 6 weeks, and wordDNA：词根词缀字典 every 6 days. Most recently, 极简Coca词汇 was updated on October 18, 2026 and wordDNA：词根词缀字典 on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*